After having eloquently depicted the sad results of witchcraft, that author says (vol. ii. p. 427), "Let those results for ever stand conspicuous, beacon-monuments, warning us and coming generations against superstition in every form, and all credulous and vain attempts to penetrate beyond the legitimate boundaries of human knowledge." If there ever was "a _credulous and vain attempt_ to penetrate beyond the legitimate boundaries of human knowledge," one was made by him who sought to find that the keen-eyed, energetic, common-sense, virtuous, religious men of Massachusetts in the seventeenth century lacked common sagacity, and that their little girls rivaled Satan himself in malignity. Most seriously we ask whether forces which can be and have been measured by palpable scales, are "beyond the legitimate boundaries of human knowledge?" We ask whether, anywhere in the universe, there exist boundaries beyond which it is, or can be, illegitimate for man to go in search after agents and forces which either habitually or occasionally act legitimately upon him in this mortal life? Another question is suggested by the foregoing quotation. Would not positive knowledge that there are unseen agents and forces within the realms of nature that can legitimately exhibit the phenomena once deemed witchcrafts, transfer such phenomena from the domain of either superstition or crime into that of science or that of beneficence? Surely it would. And, therefore, how can one possibly work more efficiently for depopulating the domain of superstition, than by bringing its inhabitants forth and colonizing them on the lands of knowledge and science? Shall we comply with the historian's advice, and still continue to leave what ignorance denominates hobgoblins and ghosts to remain shrouded in appalling mists, and thus aid them to continue to be to coming generations the same awful beings they were to the generations past? Or shall we, on the other hand, now, while experience and science are showing that such work is practicable, push discovery onward till we both find laws and learn conditions which permit closer access of disembodied beings to us, and which also permit most beneficent reciprocal action between them and us, just as soon as familiarity, confidence, calmness, and mutual trust make their access easy? Which shall we do? Which is most scientific? Which is most dutiful to God and friendly to man? Which? Is ignorance of, or is knowledge of, nature's forces and inhabitants the greater blessing? Which? Away with ignorance where knowledge is attainable.